[stella] Question about DASM

[mathys66 at bluewin.ch]

It's using the wrong argument for the fill value. If you assemble the piece of code below you'll find that the memory 
is filled with 0x17 (=23), which is the alignment value. That's why you're seeing all zeroes inserted when you align to 
a 256 byte boundary - the fill value is in this case 256 & 255 == 0.

processor 6502
seg	code
org	0
tax
align	23,-1
tax

Cheers
Thomas


----Ursprüngliche Nachricht----
Von: seagtgruff at aol.com
Datum: 28.03.2008 01:58
An: <stella at atari2600.org>
Betreff: Re: [stella] Question about DASM

It still puts $00. The documentation says it should fill with the specified value, but it flat-out doesn't work.

Michael


-----Original Message-----
From: "=?ISO-8859-1?Q?"Peter_H._Fr=F6hlich"?= <phf"@cs.jhu.edu>
To: Atari 2600 programming list <stella at atari2600.org>
Sent: Thu, 27 Mar 2008 8:43 pm
Subject: Re: [stella] Question about DASM



Hi all,

On Mar 27, 2008, at 7:18 PM, Dennis Debro wrote:

> Am I using align incorrect? In my code I have...
>
> align 256, -1
>
> Shouldn't this go to the next page and fill the bytes between with  
> $FF?
> Instead it's filling the bytes between with $00.

What happens if you say

   align 256, 255

instead?

Cheers,
Peter

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